/Engine/Plugins/Experimental/MeshModelingToolsetExp/Source/MeshModelingToolsExp/Public/PlaneCutTool.h
Action buttons. Note these set a flag to call the action later (in OnTick) Otherwise, the actions in undo history will end up being generically named by an outer UI handler transaction Cut with the current plane without exiting the tool (Hotkey: T)
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(CallInEditor, Category=Actions, Meta=(DisplayName="Cut")) void Cut()